Surgical retractor



FIG. 1 is a perspective view of a surgical retractor, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof, wherein left and right side views are identical;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing in FIGS. 1 and 4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a surgical retractor, as shown and described. 